基于它们的重复性特征,对Pseudoroegneria libanotica和Pseudoroegneria tauri进行比较性表征
Pavel Yu Kroupin1, Anna I Yurkina1, Daniil S Ulyanov1
1All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya St., 42, 127550 Moscow, Russia.
Plants (Basel, Switzerland)
|December 23, 2023
概括
这项研究比较了Pseudoroegneria物种的重复组,揭示了相似之处和独特的卫星重复模式. 这些发现有助于理解St基因组的演变,并为Triticeae草种开发新的遗传标记.
科学领域:
- 基因组学就是基因组学.
- 植物遗传学 植物遗传学
- 进化生物学 进化生物学
背景情况:
- Pseudoroegneria 种类在 Triticeae 草中至关重要,可能会将 St 基因组捐赠给多倍体动物.
- 卫星重复对于跟踪植物的基因组进化变化是有价值的.
- 对比的重复组分析提供了对物种关系和基因组结构的见解.
研究的目的:
- 为了比较地描述密切相关的Pseudoroegneria物种的重复体:Ps. 利巴诺蒂卡 (libanotica) 类药物,P.S. 类药物 tauri, 和 Ps. 的时间. 这就是"spicata".
- 为了识别和定位Ps.的染色体上的新型卫星重复. 利巴诺西卡和Ps. 一个强大的. tauri.
- 为了研究重复原子结构和卫星重复分布在Triticeae中的进化影响.
主要方法:
- 采用全基因组测序来分析选定的Pseudoroegneria物种的重复组结构.
- 生物信息工具被用来识别和描述卫星重复和可转换元素 (SIRE, Mutator, Harbinger).
- 已识别的卫星重复的染色体定位使用细胞遗传技术进行.
主要成果:
- 总的来说,重复原子结构在Ps.中是相似的. 利巴诺蒂卡 (libanotica) 类药物,P.S. 类药物 tauri, 和 Ps. 的时间. spicata,在特定的可转移元素和卫星丰度方面存在差异.
- 确定了9个新的卫星重复,其中4个 (CL69,CL101,CL119,CL244) 显示终端/远端定位,而6个 (CL82,CL89,CL168,CL185,CL192,CL207) 在Ps.中是周心的. 利巴诺西卡和Ps. 一个强大的. tauri.
- 这些发现表明,Ps和Ps之间存在密切的关系. 利巴诺西卡和Ps. tauri,尽管个体重复的区别.
结论:
- 伪红的黎巴嫩菌和Ps. 塔维具有密切的进化联系,由类似的重复原子结构和卫星重复本地化模式证明.
- 已识别的卫星重复和开发的St基因组染色体标记可以作为各种Triticeae物种及其杂交物种种群遗传学研究的宝贵工具.
- 这项研究有助于理解Triticeae部落内的基因组进化和多样性.
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